Join Date: Dec 2018
Location: Northern Virginia
Filling in the Gaps
The plane is most likely a T.S. Wheeler Co. Butt Mortise plane c.1950's.
Based on a patent issued to Wilbert A. Dohmeyer (2,579,911 in 1951), this plane was manufactured by R.M.RUMBOLD Co. in Thorton, Illinois and by T.S.WHEELER Co. The Wheeler version is distinguished by an incised groove around the center of both knobs. Rumbold blades were never stamped with a trademark.. Both Rumbold and Wheeler were in the Chicago area. In the early 50's Thomas Lie-Nielsen purchased the rights and all the tooling for the Rumbold plane and made a nearly exact duplicate of this one called the No.40B Butt Mortise Plane which are still sold today.
The Butt Mortise Plane will help you cut neat, precise mortises for hinges, lock fronts, and strike plates in a fraction of the time it takes to set up an electric router and template. The elongated slot in front of the blade provides a clear view of the work. The plane allows for precise mortises with a uniform depth.
It does not appear Stanley ever produced such a plane with the Stanley router planes being capable of filling the same need.
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